From 61518580ed60bb16edcd4fb7200d0b564b5ee9e9 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sat, 20 Oct 2018 21:46:17 +0300
Subject: introduce cancelable

---
 crates/ra_analysis/src/lib.rs | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'crates/ra_analysis')

diff --git a/crates/ra_analysis/src/lib.rs b/crates/ra_analysis/src/lib.rs
index 46cc0722b..b1d5c4936 100644
--- a/crates/ra_analysis/src/lib.rs
+++ b/crates/ra_analysis/src/lib.rs
@@ -37,6 +37,11 @@ pub use ra_editor::{
     RunnableKind, StructureNode,
 };
 
+#[derive(Clone, Copy, Debug)]
+pub struct Cancel;
+
+pub type Cancelable<T> = Result<T, Cancel>;
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct FileId(pub u32);
 
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